It took me a while but finally got it right. I scour the UK for chains and things to make super antique jewelry. This is a 56 inch Victorian slider chain, used by ladies to hold a watch on the dog clip. The chain could also be extended and pinned to the shoulder (by a guard pin which I sell). In this case I have attached the slider to the magnifying glass to it makes a beautiful delicate necklace, One if the pictures shows a line on the glass but that's from the camera - there is only one tiny scratch on the lens. The 3 inch long framework has a slight yellow look to the gold fill. the last picture shows the reverse. The actual sliding part holds a tiny ruby stone.